Choice-Supportive Bias
Updated 2026-08-08
INTRODUCTION
English translation pending.
CORE DEFINITION
Studied in cognitive dissonance research, notably by Jack Brehm and later by Robert Knox and James Inkster, choice-supportive bias describes the tendency to remember chosen options more favorably and rejected options more negatively after a decision. The core claim is that the direction of preference reverses: we do not choose an option because it is better, we come to believe it is better because we chose it. The key qualifications are that the effect grows with the irreversibility of the choice and that it reduces regret while impairing later correction.
SCAFFOLDING EFFECT
Reduce cognitive load
- Watch the rationalization: notice when you start defending a choice right after making it. - Revisit the rejected: list what you gave up and why, instead of forgetting it. - Import outsiders: ask someone with no stake to review the decision and its evidence.
Anchor fast decisions
Committing to a choice creates dissonance between the option taken and the option given up, and the mind reduces that tension by editing memory. Attributes of the chosen option get recalled more favorably and defects of the rejected one more harshly, which restores consistency and lowers regret. The distortion is harmless when the decision cannot be reversed, but it actively blocks learning whenever the decision can still be corrected.
MINIMUM ACTION
In progress 0/1Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Choice-supportive_biasverified
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